grader

/ˈɡɹeɪdɚ/

Etymology

From grade + -er (agent noun suffix) or + -er (measurement suffix) (sense 4).

name

  1. A surname.

noun

  1. A machine used in road maintenance, construction, and mining for leveling large surfaces.“The blade-grader is a long steel-framed carriage under which is fixed a steel blade capable of being tilted at various angles: its principal use is in trimming cutting-slopes.”
  2. A machine used to sort food by size or quality.
  3. One who grades, or that by means of which grading is done or facilitated.“the graders of a school examination”
  4. One who belongs to a certain grade at school.“a first-grader”